Re: Do Exposed Lead Tips of Bullets Melt During Flight?
I have read articles about high speed bullets spining at 250,000 rpm. They have determined that the friction caused by accelerating from 0-3500+ fps in milliseconds causes the lead in the bullet core to become molten. That is the only way you can explain the total vaporization of small varmints. The thin copper jackets just fly appart on impact.
You have to watch your bullet design with any of the 3600+ fps bullets. Out of 220 swift I have had just little pin holes piercing the paper at 100 yards because the 52 grain bullets are disintegrating in the air right out of the barrel.
.270 Ackley improved 29 inch 1.250 dia. target barrel 7mm STW 28 inch 1.250 target barrel. I also love my .458 mag for varmints and the biggest game in the world.